EP 1938465 A4 20120808 - OPTIMAL WEIGHTS FOR MMSE SPACE-TIME EQUALIZER OF MULTICODE CDMA SYSTEM
Title (en)
OPTIMAL WEIGHTS FOR MMSE SPACE-TIME EQUALIZER OF MULTICODE CDMA SYSTEM
Title (de)
OPTIMALE GEWICHTE FÜR DEN MMSE-RAUM-ZEIT-ENTZERRER EINES MULTICODE-CDMA-SYSTEMS
Title (fr)
POIDS OPTIMAUX DESTINES A UN EGALISEUR ESPACE-TEMPS MMSE D'UN SYSTEME CDMA A CODES MULTIPLES
Publication
Application
Priority
- US 2006023210 W 20060614
- US 28460105 A 20051121
Abstract (en)
[origin: TW200721752A] Aspects of the invention provide an enhanced chip-level linear space-time equalizer 118 for multiple-input-multiple-output (MIMO) multi-code CDMA systems reusing same spreading codes in different transmit antennas 114. Reuse of the spreading codes at the transmitter 104, 204 creates an on-time inter-stream interference component (or cross-talk among distinct transmit antenna signals) which reuse the same spreading code as the desired signal in the soft metric sequence of the MIMO CDMA receiver after MMSE space-time equalization. The equalizer 118 has a MMSE weighting vector that takes the despreading effect into account.
IPC 8 full level
H03H 7/30 (2006.01); H04B 1/69 (2011.01); H04B 7/08 (2006.01); H04B 7/216 (2006.01); H04L 27/06 (2006.01); H04L 27/22 (2006.01)
CPC (source: EP KR)
H04B 7/005 (2013.01 - KR); H04B 7/02 (2013.01 - KR); H04B 7/0842 (2013.01 - EP); H04B 7/0854 (2013.01 - EP); H04B 7/0897 (2013.01 - EP); H04L 27/26 (2013.01 - KR)
Citation (search report)
- [XI] EP 1265373 A2 20021211 - LG ELECTRONICS INC [KR]
- See references of WO 2007001867A2
Citation (examination)
- EP 1471663 A2 20041027 - SAMSUNG ELECTRONICS CO LTD [KR]
- US 2002054621 A1 20020509 - KYEONG MUN GEON [KR], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
CN 101310450 A 20081119; CN 101310450 B 20160309; EP 1938465 A2 20080702; EP 1938465 A4 20120808; JP 2009516986 A 20090423; JP 2012095295 A 20120517; JP 2014053927 A 20140320; JP 5512627 B2 20140604; JP 5722407 B2 20150520; JP 5745748 B2 20150708; KR 101019397 B1 20110307; KR 20080069266 A 20080725; TW 200721752 A 20070601; TW 201015928 A 20100416; TW I345904 B 20110721
DOCDB simple family (application)
CN 200680043068 A 20060614; EP 06773184 A 20060614; JP 2008542298 A 20060614; JP 2011229606 A 20111019; JP 2013214242 A 20131011; KR 20087015135 A 20060614; TW 95121238 A 20060614; TW 98143726 A 20060614